test/tck/AtomicReferenceFieldUpdaterTest.java

/*
 * Written by members of JCP JSR-166 Expert Group and released to the
 * public domain. Use, modify, and redistribute this code in any way
 * without acknowledgement. Other contributors include Andrew Wright,
 * Jeffrey Hayes, Pat Fischer, Mike Judd.
 */

import java.util.concurrent.atomic.*;
import junit.framework.*;
import java.util.*;

public class AtomicReferenceFieldUpdaterTest extends TestCase{
    volatile Integer x = null;
    Object z;
    Integer w;

    public static void main(String[] args){
        junit.textui.TestRunner.run(suite());
    }

   
    public static Test suite() {
        return new TestSuite(AtomicReferenceFieldUpdaterTest.class);
    }

    static final Integer zero = new Integer(0);
    static final Integer one = new Integer(1);
    static final Integer two = new Integer(2);
    static final Integer m3  = new Integer(-3);
    static final Integer m4 = new Integer(-4);
    static final Integer m5 = new Integer(-5);
    static final Integer seven = new Integer(7);
    static final Integer m10 = new Integer(-10);

    public void testConstructor(){
        try{
            AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
                a = AtomicReferenceFieldUpdater.newUpdater
                (getClass(), Integer.class, "y");
            fail("Exception not thrown");
        }

        catch (RuntimeException rt) {}
    }


    public void testConstructor2(){
        try{
            AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
                a = AtomicReferenceFieldUpdater.newUpdater
                (getClass(), Integer.class, "z");
            fail("Exception not thrown");
        }

        catch (RuntimeException rt) {}
    }

    public void testConstructor3(){
        try{
            AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
                a = AtomicReferenceFieldUpdater.newUpdater
                (getClass(), Integer.class, "w");
            fail("Exception not thrown");
        }

        catch (RuntimeException rt) {}
    }

    public void testGetSet(){
        AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x");
        x = one;
        assertEquals(one,a.get(this));
        a.set(this,two);
        assertEquals(two,a.get(this));
        a.set(this,-3);
        assertEquals(-3,a.get(this));
        
    }
    public void testCompareAndSet(){
        AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x");
        x = one;
        assertTrue(a.compareAndSet(this,one,two));
        assertTrue(a.compareAndSet(this,two,m4));
        assertEquals(m4,a.get(this));
        assertFalse(a.compareAndSet(this,m5,seven));
        assertFalse((seven == a.get(this)));
        assertTrue(a.compareAndSet(this,m4,seven));
        assertEquals(seven,a.get(this));
    }

    public void testWeakCompareAndSet(){
        AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x");
        x = one;
        while(!a.weakCompareAndSet(this,one,two));
        while(!a.weakCompareAndSet(this,two,m4));
        assertEquals(m4,a.get(this));
        while(!a.weakCompareAndSet(this,m4,seven));
        assertEquals(seven,a.get(this));
    }

    public void testGetAndSet(){
        AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x");
        x = one;
        assertEquals(one,a.getAndSet(this, zero));
        assertEquals(zero,a.getAndSet(this,m10));
        assertEquals(m10,a.getAndSet(this,1));
    }

}
Revision:	1.1
Committed:	Sun Aug 31 19:24:53 2003 UTC (20 years, 8 months ago) by dl
Branch:	MAIN
Log Message:	First check-in of tests to be in tck
#	Content
1	/*
2	* Written by members of JCP JSR-166 Expert Group and released to the
3	* public domain. Use, modify, and redistribute this code in any way
4	* without acknowledgement. Other contributors include Andrew Wright,
5	* Jeffrey Hayes, Pat Fischer, Mike Judd.
6	*/
7
8	import java.util.concurrent.atomic.*;
9	import junit.framework.*;
10	import java.util.*;
11
12	public class AtomicReferenceFieldUpdaterTest extends TestCase{
13	volatile Integer x = null;
14	Object z;
15	Integer w;
16
17	public static void main(String[] args){
18	junit.textui.TestRunner.run(suite());
19	}
20
21
22	public static Test suite() {
23	return new TestSuite(AtomicReferenceFieldUpdaterTest.class);
24	}
25
26	static final Integer zero = new Integer(0);
27	static final Integer one = new Integer(1);
28	static final Integer two = new Integer(2);
29	static final Integer m3 = new Integer(-3);
30	static final Integer m4 = new Integer(-4);
31	static final Integer m5 = new Integer(-5);
32	static final Integer seven = new Integer(7);
33	static final Integer m10 = new Integer(-10);
34
35	public void testConstructor(){
36	try{
37	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
38	a = AtomicReferenceFieldUpdater.newUpdater
39	(getClass(), Integer.class, "y");
40	fail("Exception not thrown");
41	}
42
43	catch (RuntimeException rt) {}
44	}
45
46
47	public void testConstructor2(){
48	try{
49	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
50	a = AtomicReferenceFieldUpdater.newUpdater
51	(getClass(), Integer.class, "z");
52	fail("Exception not thrown");
53	}
54
55	catch (RuntimeException rt) {}
56	}
57
58	public void testConstructor3(){
59	try{
60	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
61	a = AtomicReferenceFieldUpdater.newUpdater
62	(getClass(), Integer.class, "w");
63	fail("Exception not thrown");
64	}
65
66	catch (RuntimeException rt) {}
67	}
68
69	public void testGetSet(){
70	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x");
71	x = one;
72	assertEquals(one,a.get(this));
73	a.set(this,two);
74	assertEquals(two,a.get(this));
75	a.set(this,-3);
76	assertEquals(-3,a.get(this));
77
78	}
79	public void testCompareAndSet(){
80	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x");
81	x = one;
82	assertTrue(a.compareAndSet(this,one,two));
83	assertTrue(a.compareAndSet(this,two,m4));
84	assertEquals(m4,a.get(this));
85	assertFalse(a.compareAndSet(this,m5,seven));
86	assertFalse((seven == a.get(this)));
87	assertTrue(a.compareAndSet(this,m4,seven));
88	assertEquals(seven,a.get(this));
89	}
90
91	public void testWeakCompareAndSet(){
92	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x");
93	x = one;
94	while(!a.weakCompareAndSet(this,one,two));
95	while(!a.weakCompareAndSet(this,two,m4));
96	assertEquals(m4,a.get(this));
97	while(!a.weakCompareAndSet(this,m4,seven));
98	assertEquals(seven,a.get(this));
99	}
100
101	public void testGetAndSet(){
102	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x");
103	x = one;
104	assertEquals(one,a.getAndSet(this, zero));
105	assertEquals(zero,a.getAndSet(this,m10));
106	assertEquals(m10,a.getAndSet(this,1));
107	}
108
109	}